W6 - ACTIVE TRANSPORT AND ATP

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/7

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

8 Terms

1
New cards

obtaining energy

  • organic compounds = carbohydrates, lipids, proteins

  • enzymes speeds up reactions

<ul><li><p>organic compounds = carbohydrates, lipids, proteins</p></li><li><p>enzymes speeds up reactions</p></li></ul><p></p>
2
New cards

making energy

Aerobic respiration

  • Uses oxygen

  • Lots of ATP (~32)

Anaerobic respiration

  • No oxygen

  • Fermentation

  • Little ATP (~2)

3
New cards

Steps

  1. glucose is transported into the cell

  2. undergoes reactions to create a substate (2 ATP made)

  3. substate in presence of O2 foes to mitochondria

  4. through the CAC and ATC, creates 30 ATP

    CAC = citric acid cycle

    ETC = electron transport chain

4
New cards

ATP and energy release

  • ATP stored in mitochondria

  • conversion to ADP releases energy

    • hydrolysis with water

  • ATP replenished by providing energy

ATP + H2O → ADP + Pi + energy

5
New cards

Active transport

  • uses energy to “pump: solutes (ion) across plasma membrane

    • against concentration gradient

    • carrier proteins

    • Na+/K+ ATPase pump

  • primary (direct) and secondary (indirect)

  • low to high concentration (needs energy)

6
New cards

Steps of active transport

Step 1.

  • Three Na⁺ ions from the cytoplasm (ICF) bind to the pump

Step 2

  • ATP is hydrolyzed, and a phosphate group attaches to the pump.

  • Causes conformational change in the pump

Step 3

  • The three Na⁺ ions are released into the ECF

Step 4

  • Two K⁺ ions from the ECF bind to the pump.

Step 5

  • The phosphate group is released from the pump.

  • Conformational change back to original state

Step 6

  • The two K⁺ ions are released into the cytoplasm.

7
New cards

Endocytosis (vesicular transport)

Process of brining bulk fluids and substances into a cell

  1. vesicle from fromphospholipds in plasma membrane and cytoplasmic proteins

  2. vesicle transport engulfed substance within cell (protein recycled)

  3. vesicle fuses with endosome (sorting vesicle) - vesicle recycled

  4. endosome vesicle “sorted” to appropriate destination

<p>Process of brining bulk fluids and substances into a cell</p><ol><li><p>vesicle from fromphospholipds in plasma membrane and cytoplasmic proteins</p></li><li><p>vesicle transport engulfed substance within cell (protein recycled)</p></li><li><p>vesicle fuses with endosome (sorting vesicle) - vesicle recycled</p></li><li><p>endosome vesicle “sorted” to appropriate destination</p></li></ol><p></p>
8
New cards

Exocyotisis

The process of ejecting substances from a cell’s interior into the extracellular fluid

  1. the membrane bound vesicle migrates to the plasma membrane

  2. proteins on the vesicle fuse with protein on the plasma membrane

  3. the vesicle fuses with the plasma membrane

    pore opens to the ECF

  4. contents of vesicle released

<p>The process of ejecting substances from a cell’s interior into the extracellular fluid</p><ol><li><p>the membrane bound vesicle migrates to the plasma membrane</p></li><li><p>proteins on the vesicle fuse with protein on the plasma membrane</p></li><li><p>the vesicle fuses with the plasma membrane</p><p>pore opens to the ECF</p></li><li><p>contents of vesicle released</p></li></ol><p></p>